The study is devided into two part: PXA255 and USB host control function of CY7C67300.
研究分成两个主要部分：PXA255处理器和CY7C 67300的主机控制器功能实现。
If your host system has no serial port, use a DB9-to-USB cable.
如果您的主机系统没有串行接口，使用DB 9 - to - USB电缆。
The development works for USB device consists of two parts: device design and host driver.
USB设备的开发，大体可分为设备端开发和主机端开发两部分。
The development works for USB device consists of two parts: device design and host driver.
USB设备的开发，大体可分为设备端开发和主机端开发两部分。
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